If people can get the Avalon chips to work that would be easily 10x difficulty right there. They are selling in batches of 10,000-200,000 @ 282MH/s each, that is 2.8TH/s for each batch of 10,000 which is pretty insane. There are only 240 in each Avalon @ 66GH/s. I can imagine some people just putting 1000 in a machine and having 10 of those np.